<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>notify server</title>
</head>
<body>
    <h1>
        welcome to notify server page
    </h1>
    <script language="JavaScript">
        var event = new EventSource("/events");
        event.onmessage = function(event) {
            console.log(event.data);
        }
    </script>
</body>
</html>